Question

The three diagrams in the following figure show the lines of force (field lines) between the poles of

two magnets. Identify the poles A, B, C, D, E and F.​

Answer 1

Knowledge required:

• Like poles repel.
• Unlike poles attract.
• Magnetic field lines enter at the SOUTH pole and are emitted from the NORTH pole of a Bar Magnet.
• Magnetic fields go from NORTH to the SOUTH pole in the region outside a bar magnet.

Answer:

Figure 1: As you can see, Magnetic field lines are being emmitted from both A and B.

Therefore, A and B must be NORTH poles.

Figure 2: Magnetic fields enter both C and D.

Therefore, C and D must both be SOUTH poles.

Figure 3: Since the field lines are moving from E to F, E must be NORTH pole and F is SOUTH pole.